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LPC2220 Datasheet(PDF) 17 Page - NXP Semiconductors

Part # LPC2220
Description  16/32-bit ARM microcontrollers; flashless, with 10-bit ADC and external memory interface
PDF  50 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

LPC2220 Datasheet(HTML) 17 Page - NXP Semiconductors

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LPC2210_2220_6
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 11 December 2008
17 of 50
NXP Semiconductors
LPC2210/2220
16/32-bit ARM microcontrollers
Non-vectored IRQs have the lowest priority.
The VIC combines the requests from all the vectored and non-vectored IRQs to produce
the IRQ signal to the ARM processor. The IRQ service routine can start by reading a
register from the VIC and jumping there. If any of the vectored IRQs are requesting, the
VIC provides the address of the highest-priority requesting IRQs service routine,
otherwise it provides the address of a default routine that is shared by all the non-vectored
IRQs. The default routine can read another VIC register to see what IRQs are active.
6.4.1 Interrupt sources
Table 5 lists the interrupt sources for each peripheral function. Each peripheral device has
one interrupt line connected to the VIC, but may have several internal interrupt flags.
Individual interrupt flags may also represent more than one interrupt source.
Table 5.
Interrupt sources
Block
Flag(s)
VIC channel #
WDT
Watchdog Interrupt (WDINT)
0
-
Reserved for software interrupts only
1
ARM Core
EmbeddedICE, DbgCommRX
2
ARM Core
EmbeddedICE, DbgCommTX
3
TIMER0
Match 0 to 3 (MR0, MR1, MR2, MR3)
4
TIMER1
Match 0 to 3 (MR0, MR1, MR2, MR3)
5
UART0
RX Line Status (RLS)
Transmit Holding Register Empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
6
UART1
RX Line Status (RLS)
Transmit Holding Register empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
Modem Status Interrupt (MSI)
7
PWM0
Match 0 to 6 (MR0, MR1, MR2, MR3, MR4, MR5, MR6)
8
I2C
SI (state change)
9
SPI0
SPIF, MODF
10
SPI1 and SSP
SPIF, MODF and TXRIS, RXRIS, RTRIS, RORRIS
11
PLL
PLL Lock (PLOCK)
12
RTC
RTCCIF (Counter Increment), RTCALF (Alarm)
13
System Control
External Interrupt 0 (EINT0)
14
External Interrupt 1 (EINT1)
15
External Interrupt 2 (EINT2)
16
External Interrupt 3 (EINT3)
17
A/D
ADC
18



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